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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-228 Area Code & Prefix

(312) 228-0xxx
(312) 228-1xxx
(312) 228-2xxx
(312) 228-3xxx
(312) 228-4xxx
(312) 228-5xxx
(312) 228-6xxx
(312) 228-7xxx
(312) 228-8xxx
(312) 228-9xxx